Finding the Third Proportional to 9,219,286 and 19,915,724

Step by Step Solution

1. Step 1: Write the proportion equation
   9,219,286 : 19,915,724 = 19,915,724 : x
2. Step 2: Convert to fraction form
   9,219,286/19,915,724 = 19,915,724/x
3. Step 3: Cross multiply
   9,219,286x = 19,915,724 × 19,915,724
4. Step 4: Simplify right side
   9,219,286x = 396,636,062,444,176
5. Step 5: Solve for x
   x = 396,636,062,444,176/9,219,286
6. Step 6: Final answer
   x = 43,022,427.38